Matteo Lambertini1, Luca Boni2, Andrea Michelotti3, Teresa Gamucci4, Tiziana Scotto5, Stefania Gori6, Monica Giordano7, Ornella Garrone8, Alessia Levaggi9, Francesca Poggio1, Sara Giraudi9, Claudia Bighin1, Carlo Vecchio10, Mario Roberto Sertoli11, Paolo Pronzato1, Lucia Del Mastro9. 1. Department of Medical Oncology, U.O. Oncologia Medica A, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy. 2. Centro Coordinamento Sperimentazioni Cliniche, AOU Careggi and Istituto Toscano Tumori, Firenze, Italy. 3. U. O. Oncologia Medica I, Ospedale S. Chiara, Dipartimento di oncologia, dei trapianti e delle nuove tecnologie, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy. 4. Oncology Department, Ospedale S.S. Trinità, Sora, Italy. 5. U. O. Oncologia Medica, Ospedale Civile, Sassari, Italy. 6. S. C. Oncologia Medica, Ospedale Santa Maria della Misericordia, Perugia, Italy7U. O. C. Oncologia Medica, Ospedale Sacro Cuore-Don Calabria, Negrar-Verona, Italy. 7. S. C. di Oncologia, Azienda Ospedaliera S. Anna, Como, Italy. 8. Dipartimento di Oncologia, Ospedale di Insegnamento S. Croce e Carle, Cuneo, Italy. 9. Department of Medical Oncology, U. O. Sviluppo Terapie Innovative, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy. 10. Department of Surgical Oncology, Chirurgia Senologica U1E, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy. 11. Department of Medical Oncology, Clinica di Oncologia Medica, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Genova.
Abstract
IMPORTANCE: Whether the administration of luteinizing hormone-releasing hormone analogues (LHRHa) during chemotherapy is a reliable strategy to preserve ovarian function is controversial owing to both the lack of data on long-term ovarian function and pregnancies and the safety concerns about the potential negative interactions between endocrine therapy and chemotherapy. OBJECTIVE: To evaluate long-term results of LHRHa-induced ovarian suppression during breast cancer chemotherapy. DESIGN, SETTING, AND PARTICIPANTS: Parallel, randomized, open-label, phase 3 superiority trial conducted at 16 Italian sites. Between October 2003 and January 2008, 281 premenopausal women with stage I to III hormone receptor-positive or hormone receptor-negative breast cancer were enrolled. Last annual follow-up was June 3, 2014. INTERVENTIONS: Patients were randomized to receive adjuvant or neoadjuvant chemotherapy alone (control group) or chemotherapy plus triptorelin (LHRHa group). MAIN OUTCOMES AND MEASURES: The primary planned end point was incidence of chemotherapy-induced early menopause. Post hoc end points were long-term ovarian function (evaluated by yearly assessment of menstrual activity and defined as resumed by the occurrence of at least 1 menstrual cycle), pregnancies, and disease-free survival (DFS). RESULTS: A total of 281 women (median age, 39 [range, 24-45] years) were randomized. Median follow-up was 7.3 years (interquartile range, 6.3-8.2 years). The 5-year cumulative incidence estimate of menstrual resumption was 72.6% (95% CI, 65.7%-80.3%) among the 148 patients in the LHRHa group and 64.0% (95% CI, 56.2%-72.8%) among the 133 patients in the control group (hazard ratio [HR], 1.28 [95% CI, 0.98-1.68]; P = .07; age-adjusted HR, 1.48 [95% CI, 1.12-1.95]; P = .006). Eight pregnancies (5-year cumulative incidence estimate of pregnancy, 2.1% [95% CI, 0.7%-6.3%]) occurred in the LHRHa group and 3 (5-year cumulative incidence estimate of pregnancy, 1.6% [95% CI, 0.4%-6.2%]) in the control group (HR, 2.56 [95% CI, 0.68-9.60]; P = .14; age-adjusted HR, 2.40 [95% CI, 0.62-9.22]; P = .20). Five-year DFS was 80.5% (95% CI, 73.1%-86.1%) in the LHRHa group and 83.7% (95% CI, 76.1%-89.1%) in the control group (LHRHa vs control: HR, 1.17 [95% CI, 0.72-1.92]; P = .52). CONCLUSIONS AND RELEVANCE: Among premenopausal women with either hormone receptor-positive or hormone receptor-negative breast cancer, concurrent administration of triptorelin and chemotherapy, compared with chemotherapy alone, was associated with higher long-term probability of ovarian function recovery, without a statistically significant difference in pregnancy rate. There was no statistically significant difference in DFS for women assigned to triptorelin and those assigned to chemotherapy alone, although study power was limited. TRIAL REGISTRATION: clinicaltrials.gov Identifier:NCT00311636.
RCT Entities:
IMPORTANCE: Whether the administration of luteinizing hormone-releasing hormone analogues (LHRHa) during chemotherapy is a reliable strategy to preserve ovarian function is controversial owing to both the lack of data on long-term ovarian function and pregnancies and the safety concerns about the potential negative interactions between endocrine therapy and chemotherapy. OBJECTIVE: To evaluate long-term results of LHRHa-induced ovarian suppression during breast cancer chemotherapy. DESIGN, SETTING, AND PARTICIPANTS: Parallel, randomized, open-label, phase 3 superiority trial conducted at 16 Italian sites. Between October 2003 and January 2008, 281 premenopausal women with stage I to III hormone receptor-positive or hormone receptor-negative breast cancer were enrolled. Last annual follow-up was June 3, 2014. INTERVENTIONS:Patients were randomized to receive adjuvant or neoadjuvant chemotherapy alone (control group) or chemotherapy plus triptorelin (LHRHa group). MAIN OUTCOMES AND MEASURES: The primary planned end point was incidence of chemotherapy-induced early menopause. Post hoc end points were long-term ovarian function (evaluated by yearly assessment of menstrual activity and defined as resumed by the occurrence of at least 1 menstrual cycle), pregnancies, and disease-free survival (DFS). RESULTS: A total of 281 women (median age, 39 [range, 24-45] years) were randomized. Median follow-up was 7.3 years (interquartile range, 6.3-8.2 years). The 5-year cumulative incidence estimate of menstrual resumption was 72.6% (95% CI, 65.7%-80.3%) among the 148 patients in the LHRHa group and 64.0% (95% CI, 56.2%-72.8%) among the 133 patients in the control group (hazard ratio [HR], 1.28 [95% CI, 0.98-1.68]; P = .07; age-adjusted HR, 1.48 [95% CI, 1.12-1.95]; P = .006). Eight pregnancies (5-year cumulative incidence estimate of pregnancy, 2.1% [95% CI, 0.7%-6.3%]) occurred in the LHRHa group and 3 (5-year cumulative incidence estimate of pregnancy, 1.6% [95% CI, 0.4%-6.2%]) in the control group (HR, 2.56 [95% CI, 0.68-9.60]; P = .14; age-adjusted HR, 2.40 [95% CI, 0.62-9.22]; P = .20). Five-year DFS was 80.5% (95% CI, 73.1%-86.1%) in the LHRHa group and 83.7% (95% CI, 76.1%-89.1%) in the control group (LHRHa vs control: HR, 1.17 [95% CI, 0.72-1.92]; P = .52). CONCLUSIONS AND RELEVANCE: Among premenopausal women with either hormone receptor-positive or hormone receptor-negative breast cancer, concurrent administration of triptorelin and chemotherapy, compared with chemotherapy alone, was associated with higher long-term probability of ovarian function recovery, without a statistically significant difference in pregnancy rate. There was no statistically significant difference in DFS for women assigned to triptorelin and those assigned to chemotherapy alone, although study power was limited. TRIAL REGISTRATION: clinicaltrials.gov Identifier:NCT00311636.
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